Bulk Image Converter — Convert Multiple Images to Any Format at Once
Convert up to 50 images in bulk between JPG, PNG, WebP, and AVIF. Migrate your entire image catalog to next-gen formats for faster websites, better SEO, and smaller file sizes — all in a single batch. No format-by-format uploads, no per-file conversion limits.
Convert up to 50 images free
Your website is serving JPEGs in 2026 — and Google is penalizing you for it
Google's Lighthouse and PageSpeed Insights explicitly flag legacy image formats (JPEG, PNG) as optimization opportunities. WebP has been supported by 97% of browsers since 2021. AVIF support exceeds 93%. Yet most websites still serve JPEGs and PNGs — formats designed in 1992 and 1996 respectively. Converting your image library to WebP or AVIF isn't just a performance optimization; it's a direct SEO signal that Google measures and scores. The format your images are served in literally affects your search rankings.
Check how much you could saveConverting one image at a time is the bottleneck you don't need
Online converters are built for single files. Upload one JPG, download one WebP. Repeat 500 times for your product catalog. Each round trip takes 15-30 seconds depending on file size and internet speed. For a 500-SKU store, that's 2-4 hours of tedious, error-prone work. graficai's bulk converter processes all 500 images in batches of 50 — roughly 10 upload cycles instead of 500. What was an afternoon of clicking becomes 10 minutes of batch processing.
Convert 50 images in one batch
Format confusion costs you — here's when to use each format
Use JPEG for photographs where file size matters and transparency isn't needed. Use PNG for images requiring transparency, sharp edges (logos, text, screenshots), or lossless quality. Use WebP as the universal web format — it handles photos, transparency, and animation, with 25-35% smaller files than JPEG. Use AVIF for maximum compression and HDR support on modern browsers. The right format decision can halve your image payload without changing a single pixel of visible quality. Our bulk converter helps you apply the right format to every image in your library.
Migrate to the right formats todayHow to convert multiple images to a different format in 3 steps
Upload your image batch
Drag and drop up to 50 images — JPG, PNG, WebP, or mixed formats. All are processed together regardless of source format.
Choose your output format
Select WebP (best for web), AVIF (maximum compression), PNG (lossless/transparency), or JPG (universal compatibility). Apply to your entire batch at once.
Download converted images
Every image is converted in parallel. Download individually or as a ZIP — your entire catalog migrated to next-gen formats in one batch.
Why convert images in bulk with graficai
4 format support
Convert between JPG, PNG, WebP, and AVIF. Mix source formats freely — our engine handles JPG-to-WebP, PNG-to-AVIF, and everything between.
Transparency preserved
Alpha channels transfer intact between PNG, WebP, and AVIF. Smart fill (white background) when converting to JPEG. No unexpected transparency loss.
Combine with resize
Convert to WebP and resize to 2000px in one workflow. No separate uploads for format change and dimension change — one batch handles both.
50 images per batch
Process entire product lines at once. Parallel conversion means 50 images finish in the time it takes to convert one — no per-file queuing.
Direct SEO benefit
Google measures and scores image formats. Serving WebP or AVIF instead of JPEG directly improves PageSpeed scores and Core Web Vitals metrics.
Zero quality compromise
Highest-quality encoding settings used by default. Format conversion preserves visual fidelity — differences invisible to viewers at normal distances.
Ready to migrate your entire image library to next-gen formats?
Stop serving 1990s formats to 2026 browsers. Convert up to 50 images per batch to WebP or AVIF, shrink your image payload by 50%+, and give every page on your site a measurable SEO boost — free, online, no quality loss.